About this showing of History's Greatest Mysteries
In 1969, an unidentified killer taunted investigators with cryptic ciphers. Explore six theories that could help solve this 50-year-old mystery.
Exact TV airing
History's Greatest Mysteries
Who is the Zodiac Killer? · 3.1.
This broadcast is scheduled on BLAZE on Saturday 22 August 2026, 18:00, ending at 19:00.
When is this airing on?
History's Greatest Mysteries starts at 18:00 on BLAZE on Sat 22 Aug 2026.
Airing details
ChannelBLAZE
StartsSat 22 Aug 2026, 18:00
EndsSat 22 Aug 2026, 19:00
Episode / edition: Who is the Zodiac Killer?
Episode number: 3.1.
Next showing of History's Greatest Mysteries
The next currently listed showing is Sat 22 Aug 2026, 19:00 on BLAZE.
See all current showings